Interlocking link



July 5, 1927. su'. EENS INTERLOCKING LINK Original Filed Feb. 7. 1924 Inwnof" l Samuel I Bend', 'WA/"XMIMQWMM' Patented July 5, 1927. y' i' "1 i iJiTEn STATES PATENT oFFlcsf SAMUEL J. BIENS, OF NEW YORK, N.

INTERLOCKING LINK. Application filed February 7, 1921.1, Serial No. 691,249. Renewed November 16, 1926.

This invention relates to a belt or chain contour ofa sprocket over which the belt or which is composed of individual links, and chain may pass in order that power may be is concerned particular]y with a manner of applied; This sprocket is not illustrated as securing adjacent links together in a pivotal it forn'isno part of the invention and may GUr manner. y be of any suitable construction.

A further object of the invention consists A link of this character is particularly in providing such means whereby the direct adapted for use with chain saws, and I have, pull on the chain through the power means therefore, shown that edgeof the link oppois taken by the links themselves. site the sprocket engaging portion, as hav- 65 1o Ctill another object is the provision .of ing teeth l, the extent of which is equal to such means as above, which will also receive the distance between aperture centers in an the wear caused by partial rotation of adindividual link, the outer edge of the teeth jacent links in regard to each other. being in line with said centers. It is noted To this end the invention consists in prohowever, that the saine principle can also be 7U viding individual 'links which have aper* used Vadvantageously with any type of link tures at their-vends and a. struck-up and unbelt or chain where power is to be transder-cut portion adjacent theapertures. By mitted from one point to another, and therethus reversing adjacent links so that the fore, the'invention contemplates a greater struck-up portion in one link extends upscope than chain saws alone. 2o wardly and the similar portion in the over- The link A has a. part' struck up from Alapping link projects downwardly, as the aperture and turned back upon itself, through the aperture in the other, the links under-cut as at 6 to form a hook-shaped prouill be held together in an eliicient manner, jection 7. It isrclearly shown that a portion and also in a manner which will not only of part 7 projects into the imaginary circle B0 receive all of the wear caused by partial rodefined bv the aperture. The projection 7 tatior ot' the links in regard to each other, is bevele as at 8, for a purpose which will but also will receive the full pulling 'force be more fully described hereinafter, likewise of applied power, the remaining portion of the aperture,

lt will be found desirable in some inas at 9. 3H stances, to pass a soft rivet through the re-l Slpllalyg link B iS plOVded With a hookversed apertures in overlapping links to shaped projection 7 b made in the same assist in preifenting accidental displacement manner. f et the links, In assembling, it is only necessary to rerlhe invention further consists in the comverse the links A and B so that the projecbination, arrangement and construction of tions 7 Aand 7 b extend in opposite directions parte herein Shown and described through the reversed apertures in the over- I have illustrated in the accompanying lapped links. Such an arrangement' en Y drawings, a preferred form, although it is,k ables the beveled part 9b adjacent the aper-A to be understood thatv this is to be takenl in ture in link B to engage the undercut pore 4o an illustrative sense only, and does not tion 6 of the projection 7 in the link A. At limit the scope of the invention. j A the saine time, the beveled portion 9 adja- In these drawings cent the aperture in the link A engages the Figure l is a plan view of one embodiunder-cut portion 6b of the projection 7b on ment of my invention. the link B.

45 Fig. 2 is an edge elevation, partly in sec- It will be readily seen that the extent of tion. the projections 7 land 7b is lessthan one- Fig. 3 is a sectional view along the line half of the circumference of the aperture 3-3 of Fig. l. between the extremities of the projections Figs. i and 5 are details of the link ele- 7 and 7", so that the two links may have 105 'ments f rotary movement relative to each other to A link A is shown to consist of a plate l the extent of twice'the length of the arc l0. having apertures 2 and 2a near its ends `and In order that the links may be fastened to ne side of the longitudinal center of the j together independently of the Vabove menlink. Adjacent the apertures there is a tioned lock-,vit` has been found desirableto UU L5 teeth or irregularity 3 of such a nature that apply a ring composed of the parts l1 and this side the will conform to the l2 to the aperture in a link, within which lnay be placed a rivet 13, as is clearly shown. The object of the parts ll and l2 is simply to prevent the rivet from mushrooining into the space l0, as if' this occurred, relative rotation between links A and B would be interfered with. It, however, sufficient care is exercised in the heading or deformation of the rivet 13, the rings ll and l2 rnay be dispensed with.

It will be obvious that a plurality of links A and B rnay be used in order to produce a chain of any desired length.

While I have shown specifically the projections and 7b as having under-cut portions and the edge oit the apertures beveled as at 9 and 9b, it is quite clear that etlicient results could be secured by not having these parts under-cut, but having them abut each other in a plane substantially perpendicular to the plane ot the link. ln this instance, however', the rivet would be the sole ineans of .securing vthe links together.

lt will be apparent, h-owever, that the projections 7 and 7b, together with the edges 9 and 9b of the apertures, receive the entire wear caused by partial rotation between adjacent links, as well as the full driving strain on the belt.

Having thus described iny invention, what I claim is l. A chain or link belt including individaal links having overlappino` ends, an aperture in the end of each link, each link having an undercut projection extending within the aperture or" the overlapping link and in interlocking engagement with the wall of said aperture.

2. A chain or link belt including individual links having overlapping ends, an aperture in the end of each link, a portion ot each link forming the aperture wall being beveled, the overlapping link having a portion reversely beveled and engaging the beveled aperture wall of the iirst mentioned link. l

3. A chain saw including individual links having overlapping ends, an aperture in the eno of each link, each link having an undercut projection thereon extending within the aperture of the overlapping link, and engaging an undercut portion of the aperture wall.

4. A chain saw including links, each link having an aperture therein, a part of the aperture wall being beveled, another part of the wall having a built up projection thereon, said projection being undercut, said undercut portion engaging the beveled aperture wall ot the adjacent link.

5. A chain saw including individual links having overlapping ends, each link having an aperture therein having a part or" the wall beveled, and an undercut projection adjacent said aperture, the undercut projection oi each link extending within the aperture oi its overlapping neighbor, and underlying the bevel of its aperture wall.

In testinionywhereof, ailiX my signature.

SAMUEL J. BIENS. 

